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// Copyright (c) 2021 Tulir Asokan
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
package whatsmeow
import (
"fmt"
"time"
"go.mau.fi/whatsmeow/appstate"
waBinary "go.mau.fi/whatsmeow/binary"
waProto "go.mau.fi/whatsmeow/binary/proto"
"go.mau.fi/whatsmeow/types"
"go.mau.fi/whatsmeow/types/events"
)
// FetchAppState fetches updates to the given type of app state. If fullSync is true, the current
// cached state will be removed and all app state patches will be re-fetched from the server.
func (cli *Client) FetchAppState(name appstate.WAPatchName, fullSync, onlyIfNotSynced bool) error {
cli.appStateSyncLock.Lock()
defer cli.appStateSyncLock.Unlock()
if fullSync {
err := cli.Store.AppState.DeleteAppStateVersion(string(name))
if err != nil {
return fmt.Errorf("failed to reset app state %s version: %w", name, err)
}
}
version, hash, err := cli.Store.AppState.GetAppStateVersion(string(name))
if err != nil {
return fmt.Errorf("failed to get app state %s version: %w", name, err)
}
if version == 0 {
fullSync = true
} else if onlyIfNotSynced {
return nil
}
state := appstate.HashState{Version: version, Hash: hash}
hasMore := true
wantSnapshot := fullSync
for hasMore {
patches, err := cli.fetchAppStatePatches(name, state.Version, wantSnapshot)
wantSnapshot = false
if err != nil {
return fmt.Errorf("failed to fetch app state %s patches: %w", name, err)
}
hasMore = patches.HasMorePatches
mutations, newState, err := cli.appStateProc.DecodePatches(patches, state, true)
if err != nil {
return fmt.Errorf("failed to decode app state %s patches: %w", name, err)
}
state = newState
for _, mutation := range mutations {
cli.dispatchAppState(mutation, !fullSync || cli.EmitAppStateEventsOnFullSync)
}
}
if fullSync {
cli.Log.Debugf("Full sync of app state %s completed. Current version: %d", name, state.Version)
cli.dispatchEvent(&events.AppStateSyncComplete{Name: name})
} else {
cli.Log.Debugf("Synced app state %s from version %d to %d", name, version, state.Version)
}
return nil
}
func (cli *Client) dispatchAppState(mutation appstate.Mutation, dispatchEvts bool) {
if mutation.Operation != waProto.SyncdMutation_SET {
return
}
if dispatchEvts {
cli.dispatchEvent(&events.AppState{Index: mutation.Index, SyncActionValue: mutation.Action})
}
var jid types.JID
if len(mutation.Index) > 1 {
jid, _ = types.ParseJID(mutation.Index[1])
}
ts := time.Unix(mutation.Action.GetTimestamp(), 0)
var storeUpdateError error
var eventToDispatch interface{}
switch mutation.Index[0] {
case "mute":
act := mutation.Action.GetMuteAction()
eventToDispatch = &events.Mute{JID: jid, Timestamp: ts, Action: act}
var mutedUntil time.Time
if act.GetMuted() {
mutedUntil = time.Unix(act.GetMuteEndTimestamp(), 0)
}
if cli.Store.ChatSettings != nil {
storeUpdateError = cli.Store.ChatSettings.PutMutedUntil(jid, mutedUntil)
}
case "pin_v1":
act := mutation.Action.GetPinAction()
eventToDispatch = &events.Pin{JID: jid, Timestamp: ts, Action: act}
if cli.Store.ChatSettings != nil {
storeUpdateError = cli.Store.ChatSettings.PutPinned(jid, act.GetPinned())
}
case "archive":
act := mutation.Action.GetArchiveChatAction()
eventToDispatch = &events.Archive{JID: jid, Timestamp: ts, Action: act}
if cli.Store.ChatSettings != nil {
storeUpdateError = cli.Store.ChatSettings.PutArchived(jid, act.GetArchived())
}
case "contact":
act := mutation.Action.GetContactAction()
eventToDispatch = &events.Contact{JID: jid, Timestamp: ts, Action: act}
if cli.Store.Contacts != nil {
storeUpdateError = cli.Store.Contacts.PutContactName(jid, act.GetFirstName(), act.GetFullName())
}
case "star":
if len(mutation.Index) < 5 {
return
}
evt := events.Star{
ChatJID: jid,
MessageID: mutation.Index[2],
Timestamp: ts,
Action: mutation.Action.GetStarAction(),
IsFromMe: mutation.Index[3] == "1",
}
if mutation.Index[4] != "0" {
evt.SenderJID, _ = types.ParseJID(mutation.Index[4])
}
eventToDispatch = &evt
case "deleteMessageForMe":
if len(mutation.Index) < 5 {
return
}
evt := events.DeleteForMe{
ChatJID: jid,
MessageID: mutation.Index[2],
Timestamp: ts,
Action: mutation.Action.GetDeleteMessageForMeAction(),
IsFromMe: mutation.Index[3] == "1",
}
if mutation.Index[4] != "0" {
evt.SenderJID, _ = types.ParseJID(mutation.Index[4])
}
eventToDispatch = &evt
case "setting_pushName":
eventToDispatch = &events.PushNameSetting{Timestamp: ts, Action: mutation.Action.GetPushNameSetting()}
cli.Store.PushName = mutation.Action.GetPushNameSetting().GetName()
err := cli.Store.Save()
if err != nil {
cli.Log.Errorf("Failed to save device store after updating push name: %v", err)
}
case "setting_unarchiveChats":
eventToDispatch = &events.UnarchiveChatsSetting{Timestamp: ts, Action: mutation.Action.GetUnarchiveChatsSetting()}
}
if storeUpdateError != nil {
cli.Log.Errorf("Failed to update device store after app state mutation: %v", storeUpdateError)
}
if dispatchEvts && eventToDispatch != nil {
cli.dispatchEvent(eventToDispatch)
}
}
func (cli *Client) downloadExternalAppStateBlob(ref *waProto.ExternalBlobReference) ([]byte, error) {
return cli.Download(ref)
}
func (cli *Client) fetchAppStatePatches(name appstate.WAPatchName, fromVersion uint64, snapshot bool) (*appstate.PatchList, error) {
attrs := waBinary.Attrs{
"name": string(name),
"return_snapshot": snapshot,
}
if !snapshot {
attrs["version"] = fromVersion
}
resp, err := cli.sendIQ(infoQuery{
Namespace: "w:sync:app:state",
Type: "set",
To: types.ServerJID,
Content: []waBinary.Node{{
Tag: "sync",
Content: []waBinary.Node{{
Tag: "collection",
Attrs: attrs,
}},
}},
})
if err != nil {
return nil, err
}
return appstate.ParsePatchList(resp, cli.downloadExternalAppStateBlob)
}
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